Finding the Fourth Proportional to 1,516.42, 2,275.86 and 786.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,516.42 : 2,275.86 = 786.19 : x
2. Step 2: Convert to fraction form
   1,516.42/2,275.86 = 786.19/x
3. Step 3: Cross multiply
   1,516.42x = 2,275.86 × 786.19
4. Step 4: Simplify right side
   1,516.42x = 1,789,258.37
5. Step 5: Solve for x
   x = 1,789,258.37/1,516.42
6. Step 6: Final answer
   x = 1,179.92